Easy to attach: These replacement laces are designed for Salomon Quicklace systems, making them extremely simple to install and adjust. Just thread the tip through the locking mechanism and pull tight for a secure and comfortable fit. Durable quality: The shoelaces are made of a blend of spandex and high-quality ABS plastic, built to withstand the demands of running, hiking, and other outdoor activities. This material combination ensures long-lasting performance and resistance to wear and tear. Secure and comfortable fit: The Quicklace system provides precise and secure fit, allowing you to fine-tune the tension of your shoelaces for optimal comfort and support. The laces stay securely fastened without coming loose, even during intense activity. Specifications: Sizes: S length: 120 cm, M length: 140 cm. Material: Spandex + ABS. Package includes: 2 pairs of shoelaces.